Soap-dispensing apparatus



Feb. 23 1926.

L. KOOPERSTEIN SOAP DISPENSING APPARATUS Filed April 3, 1925 !NVENTOR [ou/,5 KOOPE/?STEA p Patented Feb. 23, 1926.

UNITED STATES FEN LOUIS KOOPERSTEN, OF NEW YORK, N. Y., ASSIGNOB TO 'WEST DISINFECTING COM- PANY, OF NEW YORK, N. Y., A COEPORATION GJE' NEW YORK.

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Application filed April 3, 1925.

To all 'whom it may com-em:

p Be it known that I,LOUIS Koornnsrnrn, a citizen of the United States of America, residing in New York, county and State of New York, have invented certain new and useful Improvements in Soap-Dispensing Apparatus, of which the following is a specification. a

. The object of the present invention is to provide soap dispensing apparatus of a type in which a measured quantity of the soap is ejectecl by' the pressure of a plunger manually operated, the dispensing stroke being the forward or initial stroke of the plunger,

-" i the return stroke of the plunger being idle.

The invention will be understood by reference to the .accompanying drawings, in

whichy Fgure 1 is a sectional elevation showing an apparatus constructed in accordance with the invention; y V

Figure 2 is an enlarged sectonal view of the structure illustrated in the preceding figure, indicating in dotted lines a modification, and

Figure 3 is a sectional detail view on the line 3-3, Figure 2.

Referring to Figure 1 of the drawings, it will be seen that the device comprses a reservoir A for containing lquid soap to be dispensed. This reservoir is supported upon a dispensing valve body or casing B. The reservoir is provided with an intake 1 closed by a plug 2 which may be threaded in place or held by friction as desired The base of ,reservoir A fits within a cup 3 formed upon the upper portion of casing B. Casng B may. be 'ormed with a rear extension 4 merging into a braclret 5, the latter being adapted to be secured upon a wall, or other vertical support.

The casing B is formed with two longitudinal chambers 6 and 7, the second chamber being of somewhat greater diameter than the first. Chamber 6 communicates with reservoir A by means of a passageway 8 in the top of the valve casing so that liquid soap may flow by gravity into the said chamber. Immediately in front of passageway 8 is a piston 9 carriecl at the rear end of a push-rod 10 having a thumb piece 11. Push-rod 10 is guided in its movements by a screw plug 12 formed with a central longitudinal aperture to receive rod 10 and provided with outer threads so that Serial Ne. 20,345.

the plug may be threadcd within chamber 7.

VVithin the casing` and at the rear of screw plug 12 is a` valve sleeve 13 which is pro vided with a central aperture to permit passage of' the puslrrod. Intermediate valv e sleeve 13 and piston 9 is a washer 14 of fibrc, leather or the like. This washer bears against an annular shoulder 15 in the casing, which shoulder marks the separation point of the two chambers 6 and 7 of unequal dianeters. It will be seen that by means of threaded plug12 sulicient pressure can be placed upon valve sleeve 13 and Washer 14: as to hold these members firmly in position within the valve casing.

Valvc sleeve 13 is formed with a circumierential channel 16, which communicates with a transverse duct 17 leading to the discharge nozzle 18. Rearwardly of pisten 19 the push-rod 10 normally closes duet 17. However, at a point slightly in advance of the duet 17, push-rod 10 is provided with a section of reduced diameter, indicated in the drawings by the nuineral 10-*2 Piston 9 normally seals chambe against the passage of soap to the discharge outlet. When push-rocl 10 is moved rearwardly, the piston first closes passageway 8 thus pr-eventing the flow of soap intermediate the reservoir and chamber 6 and then exerts a pressure upon the soap in chamber 6 rearwardly of the piston so that said soap is forced through outlet 19, thence through tube 20. At this instance of operation, the reduced section 10 of push-rod 10 will communicate with transverse duet 17 and also with outlet 21 of tube 20 so that the soap theretofore put under pressure by piston 9 Will be ejected by passage through the tube over the recluced section of the push-rod through duct 17 and out discharge nozzlc 18. In its rearward movement the push-rod is resisted by spring 22 which, when the rod is released will return the parts to initial position, as illustrated in Fgure 2.

lVhile in most cases I prefer that the communication between outlet 19 and inlet 20 be eifected by means of a tube such as the tube 20 illustrated in the drawings, such tube may be eliminatecl and the top wall of the casing closed except 'for the soa passageway 8. This modification is possible when a channel such as that indicated by dottod lines 23, Figures 2 and 3 is formed in chamber 6 at the bottom wall thereot The forward end of the channel Will be closed in the normal position of the elements and Will be opened by the rearward movement of the push-red and piston, the action being exactly the same as When the tube 20 is employed. This and other modificatons are within the spirit of the invention, What I claim and desire to secure by Letters Patent being as foll0Ws:-

1. A soap dispenser having, in combination, a valve body provided With an inlet and an outlet, a piston, a duct extending from opposite sides 'of the inlet, the outlet end of said duet being normally closed by the p'ston and means for imparting endwise movement to the pisten Whereby the inlet is closed and thereafter the outlet is opened, the continued movement of the piston forcing. liquid through said duct'an'd into the discharge outlet. i

2. A so'ap dispenser having, in combination, a valve body formed vvith an inlet and a dis'charg'e outlet, a pisten in said body and normally disposed in advance of the inleta du'ct in the' valve body and ext-ending from 'a point rearwardly of the inlet to a'point forwardlythereof, and means ;for

impar'tng endwise movement to thepiston,

wher-eloy the latter first closes the inletand then forces liquid through said duet to the discharge outlet.

3. A li'quid dispense'r having, in combination, a valve body provided With a 1on gitudinal chamber having an inlet and an ontlet, said ehamber being provided 'with y a duet leading` from a point rearwardly of the inlet to a point in `advance thereof, a packing member, a pisten, a spring normally holding the pisten in position to close the outlet of the duet and also in engagement With said packing and means for impartng endwise movement to the pisten.

4:. A liquid dispenser having, in combination, a 'valve body provided With an inlet and an outlet, a dnct leading from a point rearwardly of the inlet to a point forwardly thereof, a pisten normally closing the ou-tlet end of the duct and disposed in advance of the inlet, a spring engaging the piston, a push-red' connectedto the pisten and having an intermediate section of reduced diameter, 'a valve Sleeve surrounding the pushrod and having a duet communicating'with the outlet, said duct being normally closed by the Wall of the push-rod and apacking intermediate the valve sleeve and the pisten.

' 5.- A liquid dispenser havingin combinetion,a valve body provided With an inlet and an outlet, a tube adapted to convey liquid from a point rearwardly of the inlet to a point in advance thereof, a pisten normally closing the outlet end 'of the tube 'and disposed in advance of the inlet, a push-rod connected to the piston and having a reduce'd intermediate section, said pisten' normally closing the discharge ,outlet and a s arin en 'a in the iston; t E:) b D In testimony Whereof, I have signed my `'name to this specification.

LoU s KOOPERSTEIN. 

